KR101752352B1 - The underwater pump with impeller and insertring - Google Patents

Abstract

The present invention relates to an underwater pump provided with an impeller and an insert ring for foreign matter pre-passing, and more particularly to an underwater pump having a motor unit, an impeller coupled with a rotating shaft extending from the motor unit and rotating together with a rotating shaft, And a case having an inlet and an outlet and having an impeller installed therein, the impeller comprising: a circular base plate; An impeller boss protruding from a central surface of the base plate and having a coupling hole for coupling with a rotation shaft extending from the motor unit; And two helical vanes integrally formed on an outer circumferential surface of the impeller boss with the impeller boss as a spiral center, wherein the vane protrudes in a direction perpendicular to one surface of the base plate.

Description

[0001] The present invention relates to an underwater pump having an impeller and an insert ring for pre-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater pump provided with an impeller and an insert ring for foreign matter pre-passing, and more particularly, to a motor for protecting a motor unit by preventing various foreign substances introduced together with a fluid from being wound on an impeller, The present invention relates to an underwater pump having an impeller and an insert ring for pre-impregnating foreign matter which can be prevented from being damaged or damaged by the impeller.

Generally, submersible pump is a device that sucks and transfers fluid without direct suction to a separate suction pipe. It is mainly used for pumped water mixed with soil or dirt.

The submersible pump generally includes a motor unit having a rotating shaft rotatably driven by a power supply, a casing coupled to the motor unit and having an intake port and a discharge port, and an impeller rotatably coupled to the rotating shaft, .

Accordingly, when the rotating shaft of the motor unit rotates according to the power supply, the impeller rotates integrally and a negative pressure is formed inside the casing. Accordingly, the fluid flows into the casing through the suction port, And is discharged through a separate supply pipe.

Since the submersible pump operated in this manner is mainly used for pumping sewage mixed with dirt or foreign substances, dirt and foreign substances can be introduced into the pump casing together with the fluid when the fluid is pumped. Damage to the inside of the pump, breakage or failure of the pump frequently occurs.

Particularly, in the case of foreign matter such as a cord, a glove, or a thread, there is a case that the foreign matter flows into the casing and is wound around the rotating shaft, which acts as a load on the rotation of the rotating shaft.

In order to prevent such a problem, Korean Utility Model No. 20-1997-0041841 (a water volume regulation device with a water pump dragonfly) is disclosed in Korean Utility Model Application No. 20-1998-0032604 , A method of installing a separate filtering net at the inlet of the pump is used to prevent dust or foreign matter from entering the inside of the pump casing. Such a structure has a problem that since a large amount of solid foreign matter accumulates in the filtering net, The fluid is not sucked even when the pump is operated. In order to prevent the fluid from being sucked in, the filter has to be frequently cleaned.

Recently, as in the prior art disclosed in Korean Patent Laid-Open No. 10-2008-0056858 (Underwater Pump) or Korean Utility Model No. 10-1353776 (Impeller structure for an underwater screw pump) There has been developed an underwater milling pump in which a dirt or foreign matter is introduced into a casing by cutting and crushing the same into a small size foreign substance by providing a crushing device. The underwater milling pump currently used has a cutting mechanism When the cut fiber or sludge is cut long, the impeller inside the casing is clogged to deteriorate the performance and the motor may be burned out, resulting in an increase in the maintenance cost.

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Republic of Korea Utility Model No. 20-1997-0041841: Water Pump Easy Water Pump Korean Utility Model No. 20-1998-0032604: Structure for preventing penetration of foreign matter in underwater pump Korean Patent Publication No. 10-2008-0056858: Submerged pump Korean Utility Model No. 10-1353776: Impeller structure for underwater screw pump

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to improve the operation efficiency of the underwater pump by protecting the motor unit and the impeller rotating smoothly through various foreign substances introduced together with the fluid, And an object of the present invention is to provide a submersible pump having an impeller and an insert ring for foreign matter pre-passing which can reduce maintenance costs.

In the meantime, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides a motor unit comprising: a motor unit; an impeller coupled to a rotating shaft extending from the motor unit and rotating together with a rotating shaft; an inlet and an outlet; The impeller includes a base plate having a circular shape, an impeller boss protruding from a central surface of the base plate and having a coupling hole for coupling with a rotation shaft extending from the motor unit, And two helical vanes integrally formed on the outer circumferential surface of the impeller boss with the impeller boss as a spiral center, wherein the vane protrudes in a direction perpendicular to one surface of the base plate.

Preferably, an insert ring is further provided inside the case, and the insert ring is formed with a hollow to insert the impeller, and at least one rib for preliminary foreign matter may be formed around the hollow.

The present invention has an excellent effect of increasing the operating efficiency of the underwater pump and reducing the maintenance and maintenance cost of the underwater pump by protecting the motor unit and the impeller rotating by smoothly passing various foreign substances introduced together with the fluid .

FIG. 1 is a perspective view showing an entire structure of an underwater pump provided with an impeller and an insert ring for foreign matter pre-pumping according to an embodiment of the present invention. FIG.
Fig. 2 is a perspective view showing the impeller shown in Fig. 1, and Fig. 3 is a perspective view showing the insert ring shown in Fig.

The term used in the present invention is a general term that is widely used at present. However, in some cases, there is a term selected arbitrarily by the applicant. In this case, the term used in the present invention It is necessary to understand the meaning.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

1 is a perspective view showing an entire structure of an underwater pump provided with an impeller and an insert ring for foreign matter pre-pumping according to an embodiment of the present invention, FIG. 2 is a view of the impeller shown in FIG. 1 Fig. 3 is a perspective view showing the insert ring shown in Fig. 1; Fig.

1 to 3, an underwater pump 100 having an impeller and an insert ring for foreign matter pre-pumping according to an embodiment of the present invention includes an impeller 100 coupled with a rotary shaft extending from a motor unit, and an impeller 110.

In this case, the impeller 110 may have various shapes or structures, but the embodiment of the present invention is as follows.

First, the impeller 110 according to an embodiment of the present invention includes a circular base plate 111.

At this time, a hollow is formed at the center of the base plate 111, through which a rotation shaft extending from the motor unit can pass.

On one side of the base plate 111, an impeller boss 113 having a coupling hole 112 for coupling with a rotation shaft extending from the motor unit is provided.

The impeller boss 113 protrudes from one side of the center of the base plate 111. The hollow formed in the base plate 111 and the coupling hole 112 formed in the impeller boss 113 are engaged with the rotation axis Are positioned on the same line so that they can pass through at the same time.

2, the impeller boss 113 has a spiral center, and the impeller boss 113 is disposed at the center of the impeller boss 113 as shown in FIG. And two helical vanes 114 integrally formed on the outer circumferential surface of the base 113.

At this time, as shown in FIG. 2, the vane 114 protrudes in a direction perpendicular to one surface of the base plate 111.

2, two space portions S1 and S2 are formed, and each of the space portions S1 and S2 is formed by the impeller boss 113 ).

Meanwhile, the underwater pump 100 having the impeller and the insert ring for foreign matter pre-pumping according to an embodiment of the present invention is further provided with an insert ring 130 inside the case.

3, the insert ring 130 is formed with a hollow 131 for inserting the impeller 110, and at least one rib (not shown) for foreign material pre- ribs 132 are formed.

The impeller 110 is inserted into the insert ring 130 as described above and the inserted impeller 110 is not constrained to the insert ring 130 and the insert ring 130 As shown in Fig.

Meanwhile, the underwater pump 100 including the impeller and the insert ring for foreign matter pre-pumping according to an embodiment of the present invention includes stainless steel and reinforced plastics to improve corrosion resistance and durability. It is not limited to this.

As a result, the submersible pump having the impeller and insert ring for foreign matter pre-pumping according to an embodiment of the present invention is configured such that the motor unit and the impeller for smoothly passing various foreign substances introduced together with the fluid through the above- Thereby improving the operation efficiency of the underwater pump and reducing the maintenance and maintenance cost of the underwater pump.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation in the present invention. Various changes and modifications may be made by those skilled in the art.

100: An underwater pump with an impeller and insert ring for foreign matter pre-pumping according to an embodiment of the present invention
110: Impeller
111: base plate
112: coupling hole
113: Impeller boss
114: Vane
120: Case
121:
130: insert ring
131: hollow
132: rib
S1, S2:

Claims (2)

An underwater pump comprising: a motor unit; an impeller coupled to a rotating shaft extending from the motor unit and rotating together with the rotating shaft; a case coupled to the motor unit, having a suction port and a discharge port,
The impeller:
A base plate having a circular shape;
An impeller boss protruding from a central surface of the base plate and having a coupling hole for coupling with a rotation shaft extending from the motor unit; And
And two helical vanes integrally formed on an outer peripheral surface of the impeller boss with the impeller boss as a spiral center,
Wherein the vane protrudes in a direction perpendicular to one surface of the base plate,
Wherein an insert ring is further provided in the case, wherein the insert ring is formed with a hollow to insert the impeller, and at least one rib for preliminary foreign matter is formed around the hollow. Underwater pump with impeller and insert ring.
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